BiEDS OF Indiana. 551 



g'^. Tarsus not greatly elongate; tibia mostly entirely feathered. Not 

 Waders. 



l^. Bill strongly hooked, with distinct cere at base. 



m^. Toes three in front, one behind. The outer toe 

 sometimes reversible. RAPTORES. J 



m*. Toes two in front, two behind. PSITTACI. K' 



P. Bill not both strongly hooked and cered. 



n^. Hind toe short, decidedly elevated ; "toes slightly 

 connected at base by web;" no soft membrane 

 about nostrils. GALLING. H 



n^. Hind toe little, if at ail, above the level of the 

 rest (rarely absent). 

 qI. Nostrils opening beneath a soft, swollen cere; 

 hind claw short. COLUMB.E. I 



0^. Nostrils not opening beneath a soft, swollen cere. 

 p^. Wings very long, with ten quills; tail of ten 

 feathers; gape very wide and deeply cleft, 

 or else the bill long and slender; (tongue ex- 

 tensile); secondaries only six in number. 



MACROCHIRES. N 

 p^. Wing not very long; gape not very wide nor 

 deeply cleft ; or else wing with only nine 

 quills and tail with twelve feathers, 

 fyi. Toes only two in front; or, if three, the 

 middle and outer toes connected for at least 

 half their length. 

 ?•!. Tail feathers stifli' and pointed; bill more 

 or less chisel-like.' PICI. M 



r^. Tail feathers neither stiflT nor pointed; 

 bill not chisel-like. COCCYGES. L 



q'^. Toes three in front, one behind, the middle 

 and outer toes not united for half their 

 length ; lower part of thighs feathered and 

 the tarsus equal to or longer than the lat- 

 eral toes. PAS8ERES. O 



FAMILIES. 

 A. Order PYG0P0DE8. 



DIVING BIRDS. 



o^. Feet lobate. Podicipid.?:. — Grebes. I 



a^. Feet webbed. 



b\ With four toes. Ubinatokii)^..— LooNS. II 



62. Wi'th three toes. Alcid.*:.— Auks, Etc. Ill 



